Graphite-teflon-tyrosinase composite electrodes for the monitoring of phenolic compounds in predominantly non-aqueous media

The behavior of a graphite-Teflon-tyrosinase amperometric biosensor in pred ominantly nonaqueous media constituted by different reversed micellar syste ms is discussed. Monitoring of several phenolic compounds substituted in di fferent positions with different functional groups was carried out. The eff ect of the composition of the reversed micelle on the response of the tyros inase biosensor has been analyzed. These composite bioelectrodes allow the regeneration of the electrode surface by polishing and exhibit long-term op eration and stability.